Waterproof Bluetooth Headphones Radio MP3 Player Neckband Wireless Sports Headset Over-Ear Earbuds with Hi-Fi Stereo,noise cancelling technology CVC6.0 and 15 Hours Playtime Features: --SWEATPROOF: Totally sweat-proof, perfect for all kinds of sports,including running,jogging,walking,cycling and more. --FLEXIBLE & LIGHTWEIGHT: The headset is lightweight (1.5oz) and compact for easily wearing and carrying.Its unique behind-the-head wire can flexibly auto shrink,which eliminates troublesome wires tangling or dangling. --BLUETOOTH 4.1 TECHNOLOGY: Advanced Bluetooth CSR 8635 chipset provides you a faster transmission and lower latency. Wireless range up to 10m(33ft). It also supports simultaneous connection of two devices. --NOISE CANCELLING TECHNOLOGY: Featured with CVC6.0 noise cancelling technology, our headphone filters out background noise to guarantee high quality sound and provides you clearer voice for calls. --LONG WORKING TIME: The built-in high-density rechargeable lithium battery lasts up to 15 hours of playing time/ talking time with a quick charge of only 2-3 hours. --COMPATIBILITY & WARRANTY: Compatible with all Bluetooth enabled devices such as iPhone, iPad, Samsung Galaxy Series, Sony Xpeira,Google Nexus, Android Phones, Tablets and more. What's in the box 1 x Waterproof headphone